actually you do not need the desktop QT installed at all. you do however need to install Mingw. I have been working on building the LIBs in windows (not sure why people care if the build is in windows or Linux...except for the qmake part) but I decided I would get it to work.

I will say this - it's taking much longer to build in the Windows VM that is does in the Ubuntu VM. But I hope to have the results posted today or tomorrow (depending on how long it takes to build).